The middle class
expended
It is the energy expended by a mechanical force acting over a distance.
the development of industrilization
Adolf Hitler.
It means the same as spent. Money which is expended is spent. A battery which is expended is spent; it has been used up.
Europe
The power during the lift is (weight of the barbell in Newtons)/4.4 watts.Note:Power is not "expended". Energy is. Power is the rate at which energy is expended.
many things became mass produced.
ca[itol technology transportation and energy
Industrialization impacted the American economy in a variety of ways. Urbanization occurred due to immigration, when people moved from rural areas in search of steady employment.
Urgent need for war supplies of every sort.
The energy expended against friction is mostly converted into heat, increasing the temperature of the surfaces in contact. This heat energy is then dissipated into the surrounding environment. Some of the energy may also be converted into sound energy due to vibrations caused by the frictional forces.